On Tue, 14 Feb 2012 12:25:31 -0600 Jon Elson <[email protected]> wrote:
> dave wrote: > > I suspect the only reason to use carbide is that small HSS mills are > > really flexible. > > > Well, it is both a hardness/wear resistance issue and a stiffness > issue. I VERY rarely > use small HSS tooling for this reason. Our shop at work is guys from > the "old school" > and almost never use carbide on the mill (use lots of indexable > carbide on the lathe). > I remember watching them make something for me a while ago with a > 1/16" HSS end mill, and I swear the tip of the end mill was tilted 30 > degrees from straight. > I suggested carbide but they didn't have any, so they had FITS > getting that slot to > the right dimension. > > Even though my mill has serious backlash I can climb mill with > > small mills, eg. <= .25". I have had occasional trouble with a .5 > > rougher but I had really buried it. I can climb mill with .5 > > carbide roughers on steel if I take a light cuts like 50 to 100 > > thou. > I used to make climb cuts with great trepidation on my manual > Bridgeport, as it > has .030" blacklash on X and .050"+ on Y. Now, I make practically > all cuts in the climb direction except when going back and forth > cleaning up the side of some piece. > > Jon GOOD GRIEF!! and I thought 0.003 on X and Y was bad. If I'm lucky I can go hold the piece so I can go all the way around climb-cutting. I seem to be doing more where I rough with a .500 and clean up with 0.25" carbide. Of course the doc is limited. Dave > > ------------------------------------------------------------------------------ > Keep Your Developer Skills Current with LearnDevNow! > The most comprehensive online learning library for Microsoft > developers is just $99.99! Visual Studio, SharePoint, SQL - plus > HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when > you subscribe now! http://p.sf.net/sfu/learndevnow-d2d > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
